Valid Time

Valid time refers to the specific period during which a piece of information, such as a weather forecast, train schedule, or data record, is considered accurate and applicable. It indicates when the data is relevant or in effect, starting at a certain point and ending when it no longer reflects the current situation. For example, a weather forecast might be valid from 6 AM to 6 PM today, meaning the predictions are accurate only within that timeframe. Valid time helps ensure that users rely on the correct, up-to-date information for decision-making.